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Benefit Plans, Estimated Amortization of Amounts in Other Accumulated Comprehensive Income (Details) $ in Millions | Dec. 31, 2018 USD ($)
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Pension Benefits [Member] |
Amounts that will be amortized from Accumulated other comprehensive income (loss) in next fiscal year [Abstract] |
Amortization of net (gain) loss | $ 9.6
Total costs to be recognized | 9.6
Post-retirement Benefits [Member] |
Amounts that will be amortized from Accumulated other comprehensive income (loss) in next fiscal year [Abstract] |
Amortization of net (gain) loss | (0.8)
Total costs to be recognized | $ (0.8)

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